1. 05 Feb, 2010 1 commit
    • Sridhar Samudrala's avatar
      packet: Add GSO/csum offload support. · bfd5f4a3
      Sridhar Samudrala authored
      This patch adds GSO/checksum offload to af_packet sockets using
      virtio_net_hdr. Based on Rusty's patch to add this support to tun.
      It allows GSO/checksum offload to be enabled when using raw socket
      backend with virtio_net.
      Adds PACKET_VNET_HDR socket option to prepend virtio_net_hdr in the
      receive path and process/skip virtio_net_hdr in the send path. This
      option is only allowed with SOCK_RAW sockets attached to ethernet
      type devices.
      
      v2 updates
      ----------
      Michael's Comments
      - Perform length check in packet_snd() when GSO is off even when
        vnet_hdr is present.
      - Check for SKB_GSO_FCOE type and return -EINVAL
      - don't allow tx/rx ring when vnet_hdr is enabled.
      Herbert's Comments
      - Removed ethernet specific code.
      - protocol value is assumed to be passed in by the caller.
      Signed-off-by: 's avatarSridhar Samudrala <sri@us.ibm.com>
      Signed-off-by: 's avatarDavid S. Miller <davem@davemloft.net>
      bfd5f4a3
  2. 04 Feb, 2010 39 commits